Age Time Interval between
1st and 2nd dose (months)
Time Interval between
2nd and 3rd dose (months)
18 3.7 0
19 3.4 3.7
20 3.4 4.8
21 4.0 4.7
22 3.4 7.4
23 3.7 4.8
24 3.4 5.2
25 3.3 7.8
≥26* 3.3 4.4
Average (months) 3.5 4.8
*Includes females who were older than 26 when they received 2nd or 3rd injection
Table 3: Timing of Doses.